Homayoun

Homayoun Bagherinia, San Francisco, CA US

Patent application number

Description

Published

20090268162

METHOD FOR FINDING THE LATERAL POSITION OF THE FOVEA IN AN SDOCT IMAGE VOLUME - Embodiments of the present invention provide methods for finding the lateral position of the fovea in an OCT image volume. In one instance, a cost function is developed whose minimum is located at or near the foveal center. This cost function includes one or more measures of retinal layer thickness and/or measures of distance from blood vessels or a priori locations.

10-29-2009

20120062841

METHOD FOR FINDING THE LATERAL POSITION OF THE FOVEA IN AN SDOCT IMAGE VOLUME - Embodiments of the present invention provide methods for finding the lateral position of the fovea in an OCT image volume. In one instance, a cost function is developed whose minimum is located at or near the foveal center. This cost function includes one or more measures of retinal layer thickness and/or measures of distance from blood vessels or a priori locations.

03-15-2012

Homayoun Bagherinia, Oakland, CA US

Patent application number

Description

Published

20130188140

SYSTEMS AND METHODS FOR ENHANCED ACCURACY IN OCT IMAGING OF THE CORNEA - Systems and methods for enhanced accuracy in optical coherence tomography imaging of the cornea are presented, including approaches for more accurate corneal surface modeling, pachymetry maps, keratometric values, and corneal power. These methods involve new scan patterns, an eye tracking mechanism for transverse motion feedback, and advanced motion correction algorithms. In one embodiment the methods comprise acquiring a first sparse set of data, using that data to create a corneal surface model, and then using the model to register a second set of denser data acquisition. This second set of data is used to create a more accurate, motion-corrected model of the cornea, from which pachymetry maps, keratometric values, and corneal power information can be generated. In addition, methods are presented for determining simulated keratometry values from optical coherence tomography data, and for better tracking and registration by using both rotation about three axes and the corneal apex.

07-25-2013

20130208240

SEGMENTATION AND ENHANCED VISUALIZATION TECHNIQUES FOR FULL-RANGE FOURIER DOMAIN OPTICAL COHERENCE TOMOGRAPHY - Presented here are new processing techniques for optical coherence tomography (OCT) data that allow for improved visualization and use of full-range OCT images. These techniques minimize the central line artifact and the complex conjugate artifact without requiring additional system hardware or significantly increasing post-processing time. The central line artifact is minimized by normalizing each A-scan to account for ripples at the zero-delay position. The complex conjugate artifact is minimized by segmentation of a layer or layers that cross the zero-delay position, and in some embodiments by further segmentation of other surfaces based on the segmentation of the initial layer or layers. The segmentation information is then used to selectively attenuate the complex conjugate image. It may also be used for other purposes, such as dewarping.

08-15-2013

20130229621

METHOD FOR FINDING THE LATERAL POSITION OF THE FOVEA IN AN SDOCT IMAGE VOLUME - Embodiments of the present invention provide methods for finding the lateral position of the fovea in an OCT image volume. In one instance, a cost function is developed whose minimum is located at or near the foveal center. This cost function includes one or more measures of retinal layer thickness and/or measures of distance from blood vessels or a priori locations.

09-05-2013

20140029820

DIFFERENTIAL GEOMETRIC METRICS CHARACTERIZING OPTICAL COHERENCE TOMOGRAPHY DATA - A method is disclosed for analyzing 3D image data generated from optical coherence tomography (OCT) systems. The first step in the method is to identify one or more surfaces within the 3D data set. The surfaces are then characterized using geometric primitives. Geometric primitives such as concavities, convexities, planar parts, saddles, and crevices can be used. In a preferred embodiment, the primitives are combined. Various pathological conditions of the eye can be evaluated based on any analysis of the primitives.

01-30-2014

20140268039

SYSTEMS AND METHODS FOR VARIABLE MODE OPTICAL COHERENCE TOMOGRAPHY IMAGING - Systems and methods for improvements to optical coherence tomography systems for operating in different imaging modes are presented. In one embodiment, a system for identifying the presence and type of an adjunct lens operably connected to the OCT instrument for changing between imaging modes in the system is described. In a second embodiment, a system for dynamically autofocusing the OCT system depending on the layer of interest is presented. In a third embodiment, the overall power of the system used for imaging can be adjusted depending on the location and type of scan desired while accounting for the safety standards for recommended light exposure.

09-18-2014

20150062590

EVALUATION OF OPTICAL COHERENCE TOMOGRAPHIC DATA PRIOR TO SEGMENTATION - An efficient method of evaluating the level of contrast of an OCT dataset is presented. The method develops a metric to segregate useful and not-so-useful data in one or more OCT B-scans, in order to reduce spurious subsequent analyses of the data by downstream segmentation algorithms. It is designed to be fast and efficient and is applied to determining autofocus of an OCT instrument real-time and in identifying a real image from its complex conjugate twin.

Homayoun Dilmaghani, Merenvielle FR

Patent application number

Description

Published

20090218440

INTEGRATED MULTIFUNCTIONAL POWERED WHEEL SYSTEM FOR AIRCRAFT - The invention relates to a powered wheel system for an aircraft, comprising at least one undercarriage with several rotatably held wheels, with the powered wheel system comprising two or more motors of which in each case at least one motor is coupled to at least one of the wheels, and comprising at least one control device that is coupled to the motors. A control device is equipped to control operation of the motors independently of each other as far as their respective rotary speeds and direction of rotation are concerned, so that the system is able, among other things, to effect taxiing; by means of rotary speed differentials on different motors to be able to steer the aircraft; prior to landing to bring the wheel circumference speeds to landing speed; and to boost the undercarriage brakes of the aircraft. Furthermore, by means of an improvement of the system according to the invention, the rotary speeds of the wheels may be determined with precision. The invention furthermore relates to a method for driving wheels of an aircraft.

09-03-2009

20120055183

SYSTEM AND METHOD FOR COOLING A SPACE IN A VEHICLE - A system for cooling a space in a vehicle comprises a sorption wheel, at least one heat exchanger, at least a first humidifier unit and at least one fuel cell, wherein the sorption wheel is adapted for drying ambient air and for conveying dried process air to the downstream heat exchanger and the heat exchanger is adapted for cooling process air, with the heat exchanger being connected to the first humidifier unit for humidifying cooled process air, and wherein the fuel cell is connected to the sorption wheel and adapted for making available fuel cell exhaust air for regenerating the sorption wheel and water to be introduced into the first humidifier unit. Since the utilization of fuel cells is increasingly considered in modern vehicles and, in particular, commercial aircraft, the system according to the invention makes it possible to realize a symbiotic relationship between already installed fuel cells and cooling systems in vehicles, in which the further use of the waste products heat and humidity leads to fuel savings. In addition, an evaporative cooling method is presented, in which a fuel cell serves for supplying heat and water.

03-08-2012

20130056583

HANDLING SYSTEM FOR HANDLING OBJECTS IN A VEHICLE, STORAGE DEVICE AND METHOD FOR HANDLING OBJECTS IN A VEHICLE - A handling system for handling objects in a vehicle comprises a storage apparatus that is positionable outside a vehicle cabin, an access device that is positionable in a vehicle cabin, and a transport device for transporting objects between the storage apparatus and the access device. The storage apparatus comprises a storage space and a connection station that is connectable to the transport device, wherein the storage apparatus comprises at least one drive device for moving carriers on which objects to be stored are held. The handling system comprises at least one guiding device that with the drive device guides the carriers on at least one circular path within the storage space. The storage space thus comprises a vertical flat shape that results in a significantly smaller reduction in the available cargo volume in a vehicle, while at the same time maximizing the design space available for passenger seats.

03-07-2013

Patent applications by Homayoun Dilmaghani, Merenvielle FR

Homayoun Dowlat, San Diego, CA US

Patent application number

Description

Published

20100015956

RATING OF MESSAGE CONTENT FOR CONTENT CONTROL IN WIRELESS DEVICES - Systems, methodologies, and devices are described that facilitate filtering content sent to a mobile device(s) by a content provider via a core network. A content provider can determine a content rating for content, and/or the core network and/or mobile device can determine or infer a content rating for unrated content from a content provider, based in part on predefined content rating criteria. A mobile device user can specify a desired content rating preference for the mobile device. A filter(s) respectively associated with the core network and/or mobile device can filter the content based in part on the content rating of the content and the content rating preference of the mobile device to which the content is being sent. Content that does not meet a content rating threshold can be filtered out and stored in a secure content folder accessible using a security code or discarded.

01-21-2010

Homayoun Kamkar Parsi, Erlangen DE

Patent application number

Description

Published

20110305345

METHOD AND SYSTEM FOR A MULTI-MICROPHONE NOISE REDUCTION - A method for a multi microphone noise reduction in a complex noisy environment is proposed. A left and a right noise power spectral density for a left and a right noise input frame is estimated for computing a diffuse noise gain. A target speech power spectral density is extracted from the noise input frame. A directional noise gain is calculated from the target speech power spectral density and the noise power spectral density. The noisy input frame is filtered by Kalman filtering method. A Kalman based gain is generated from the Kalman filtered noisy frame and the noise power spectral density. A spectral enhancement gain is computed by combining the diffuse noise gain, the directional noise gain, and the Kalman based gain. The method reduces different combinations of diverse background noise and increases speech intelligibility, while guaranteeing to preserve the interaural cues of the target speech and directional background noises.

12-15-2011

20130259239

HEARING APPARATUS FOR BINAURAL SUPPLY AND METHOD FOR PROVIDING A BINAURAL SUPPLY - A hearing apparatus for a binaural supply contains a first earhook to be worn on one ear, having a plurality of microphones, and a first signal processing device which is configured to generate a local earpiece signal for an earpiece of the first earhook from microphone signals of the microphones by use of multichannel signal processing of each of the microphone signals. A beam forming device and a transmission device are additionally provided in the first earhook. The beam forming device is configured to generate a directional output signal from the microphone signals by signal processing which has fewer channels than that of the first signal processing device, and wherein the transmission device is set up to transmit the directional output signal as an electrical or electromagnetic signal from the first earhook.

10-03-2013

20140314258

BINAURAL HEARING AID SYSTEM AND METHOD OF HEARING AID MICROPHONE ADJUSTMENT - A hearing aid system is enabled for binaural microphone adjustment by way of the wearer's own voice. The hearing aid system has a first and a second hearing aid having a first and a second acousto-electric converter. The converters have a signal link with a signal processing unit which determines and compensates for signal deviations caused by the first and second acousto-electric converters on the basis of signals from the wearer's own voice. The wearer's own voice is recognized by a special facility.

10-23-2014

20140314259

METHOD FOR ADJUSTING THE USEFUL SIGNAL IN BINAURAL HEARING AID SYSTEMS AND HEARING AID SYSTEM - A method operates a hearing aid system and the hearing aid system has at least two hearing aid devices, between which a signal path is provided, and with at least one signal processing unit, which is provided to process audio signals. In the method the signal processing apparatus filters first audio signals with a filter predetermined for a defined spatial direction, from which a useful signal arrives, so that second audio signals are generated, in which the components of the useful signal in the second audio signals are equalized to a greater degree than in the first audio signals. The second audio signals are then filtered with an adaptive filter, so that third audio signals are generated, in which the components of the useful signal are equalized to an even greater degree than in the second audio signals.

10-23-2014

20140314260

METHOD OF CONTROLLING AN EFFECT STRENGTH OF A BINAURAL DIRECTIONAL MICROPHONE, AND HEARING AID SYSTEM - A hearing aid system has at least two hearing aid devices to be worn on both sides of a wearer's head. The hearing aid devices have a transducer for picking up an acoustic signal and converting same into a first audio signal in each case. A signal processing unit processes audio signals received from each hearing aid device through a signal connection. The signal processing unit evaluates a signal component from a preferred direction in relation to the head of the wearer in the first audio signals. By way of the first audio signals the signal processing unit generates a first binaural directional microphone signal and adjusts its directional characteristic as a function of the evaluation.

10-23-2014

20140341407

METHOD AND HEARING AID SYSTEM FOR LOGIC-BASED BINAURAL BEAM-FORMING SYSTEM - A method for beam-forming for a hearing aid system is disclosed. The hearing aid system has a left and a right hearing aid device for disposal on a head of a wearer. The hearing aid devices each have microphones for converting the sound into a left and a right input signal and also a signal processing device which receives the two input signals. In the method a number of different linear combinations of the left and the right input signal are provided, are assessed according to a predetermined signal criterion and, in dependence thereof, one of the linear combinations is selected as a beam signal.

11-20-2014

Patent applications by Homayoun Kamkar Parsi, Erlangen DE

Homayoun Najjaran, Kelowna CA

Patent application number

Description

Published

20090070149

INTELLIGENT DATA MANAGEMENT SYSTEM AND METHOD - An intelligent data management system and method are disclosed. The system includes a database of stored data, a middleware layer having access to the stored data, and at least one client device for remotely accessing a provided course of action. The middleware layer includes a fuzzy logic knowledge base for generating, updating, or firing fuzzy logic rules and a fuzzy logic inference engine for processing the stored data guided by the fuzzy logic rules to provide the course of action.

03-12-2009

Homayoun Sanatgar, Rancho Cucamonga, CA US

Patent application number

Description

Published

20150090669

FLUID FILTER WITH THERMAL CONTROL AND PRESSURE BYPASS - A filter assembly includes a filter media for filtering a fluid, and a valve having a fluid inlet and a fluid outlet for controlling a flow of the fluid through the filter assembly. The valve includes a thermally active element that changes shape between a first configuration and a second configuration in response to a temperature variation. When the thermally active element is in the first configuration the valve is open with the fluid inlet in fluid communication with the fluid outlet, and the thermally active element changes shape to the second configuration to close the valve. The thermally active element may move a valve poppet against a valve seat to close the valve. A pressure bypass is configured to open the valve in response to a pressure increase in the filter assembly above a threshold pressure when the thermally active element is in the second configuration.

04-02-2015

Homayoun Shahri, San Diego, CA US

Patent application number

Description

Published

20110081026

SUPPRESSING NOISE IN AN AUDIO SIGNAL - An electronic device for suppressing noise in an audio signal is described. The electronic device includes a processor and instructions stored in memory. The electronic device receives an input audio signal and computes an overall noise estimate based on a stationary noise estimate, a non-stationary noise estimate and an excess noise estimate. The electronic device also computes an adaptive factor based on an input Signal-to-Noise Ratio (SNR) and one or more SNR limits. A set of gains is also computed using a spectral expansion gain function. The spectral expansion gain function is based on the overall noise estimate and the adaptive factor. The electronic device also applies the set of gains to the input audio signal to produce a noise-suppressed audio signal and provides the noise-suppressed audio signal.

04-07-2011

Homayoun Shahri, Dana Point, CA US

Patent application number

Description

Published

20100273443

CONTEXT-BASED MESSAGING FOR WIRELESS COMMUNICATION - This disclosure describes techniques for providing a wireless communication device with context-based voicemail messaging. In reply to a call, a wireless communication device may select a message based on a context. As an example, a wireless communication system may detect a call directed to a wireless communication device from a caller, generate one of a plurality of reply messages for the caller based on a context of the wireless communication device derived from input information received by at least one input of the wireless communication device, and transmit the generated reply message to the caller. In some cases, the message may be selected based on both context and caller identity. In addition, the message may be selected based at least in part on analysis of a pattern of usage or user activity with respect to the wireless communication device.

10-28-2010

Homayoun Shahri, Dan Point, CA US

Patent application number

Description

Published

20120169608

EXTENDING BATTERY LIFE OF A PORTABLE ELECTRONIC DEVICE - A particular method includes determining a battery charge value of a battery at a particular time and comparing the battery charge value at the particular time to a threshold battery charge value of a battery usage profile associated with the particular time, where the threshold battery charge value varies over time (e.g., a dynamic threshold). When the battery charge value does not satisfy the threshold battery charge value, the method includes prompting a user to select a power save mode. For example, the power save mode may include activating a different backlight element of a plurality of backlight elements of a display device in response to a motion sensor of a portable electronic device detecting movement of the portable electronic device from a first orientation to a second orientation.

07-05-2012

Homayoun Talieh, Saratoga, CA US

Patent application number

Description

Published

20100147677

DRUM DESIGN FOR WEB PROCESSING - A roll to roll system for depositing a material on a workpiece is provided. In one embodiment, the system includes a drum, which rotates about an axis that is transverse to a process direction, and a number of PVD deposition units. The drum further includes a peripheral surface that includes a groove having a recessed workpiece contact surface that is parallel to the axis and disposed between a first side wall and a second side wall. A portion of the recessed workpiece contact surface supports a section of the workpiece and the first and second side walls maintain the section of the workpiece on the portion of the recessed workpiece contact surface as the workpiece is moved along the process direction. The PVD deposition units are disposed across from some of the portion of the peripheral surface and continuously deposit the material across a width of some of the section of the workpiece.

06-17-2010

20110239450

ROLL-TO-ROLL MANUFACTURING OF FLEXIBLE THIN FILM PHOTOVOLTAIC MODULES - Described in one embodiment is a system that has a multiple number of different stations for forming solar cell modules. Described in another embodiment is a system that includes a cutting station, a setting station, and an interconnection station to create different series-connected flexible solar cell modules. Described in still another embodiment is a monolithically integrated multi-module power supply.

10-06-2011

Homayoun Torab, Lawrenceville, GA US

Patent application number

Description

Published

20080212486

Checking of broadband network components - Systems and methods for checking broadband network components are provided in which an automated interactive system permits a field technician to check various conditions of a communication line or other broadband network components without the assistance of a support technician. While options to request assistance from a support technician are provided, the automated interactive system permits the field technician to perform various functions on a communication line without additional assistance, especially for routine tasks. The automated interactive system, therefore, removes efficiencies that may be associated with conventional approaches for checking broadband network components.

09-04-2008

Homayoun Torab, Snellville, GA US

Patent application number

Description

Published

20080292313

Methods, Systems, and Computer-Readable Media for Ranging a Device in a Point-to-Multipoint Network - Methods, systems, and computer-readable media provide for ranging a device in a point-to-multipoint network. According to embodiments, a method for ranging a device in a point-to-multipoint network is provided. According to the method, a device identifier representing a drop in the point-to-multipoint network where the device is installed is received. The device identifier is associated with the device. The device identifier and a unique identifier associated with the device are transmitted over the point-to-multipoint network to a central unit for ranging the device in the point-to-multipoint network.

11-27-2008

20090119750

PROVIDING ACCESS CONTROL LIST MANAGEMENT - Control list management may be provided. First, it may be detected that an event has occurred on a data network. Then, it may be determined, in response to the detected event, that a device on the data network needs to be provided with an access control list. Next, the access control list may be obtained from a database central to the data network. Then, the device may be provided with the obtained access control list.

05-07-2009

Homayoun Yousefi'Zadeh, Irvine, CA US

Patent application number

Description

Published

20110261709

METHOD AND APPARATUS FOR THE USE OF MULTIPLE-INPUT, MUTLIPLE OUTPUT (MIMO) SYSTEMS FOR MULTI-PACKET RECEPTION (MPR) - A method for multipacket communication in an asynchronous wireless system includes the steps of transmitting at least two packets of 2M digital signals from a plurality of transmitters without other transmission taking place within a predetermined number of symbol durations from each side of each packet. Each transmitter generates digital signals denoted as at least two super-symbols according to an Alamouti coding scheme corresponding to M symbols of first set of super-symbols in a first transmission interval and a second set of super-symbols in a second transmission interval. The received packets include inter-symbol interference of the super-symbols when imperfectly synchronized which expands the time interval of the received packets. A symmetric Alamouti structure for the received packets is generated by folding the expanded received signal on itself, multiplying by a factor of −1, and decoding using the Alamouti structure for the received packets at each antenna of the receiver.

10-27-2011

20120026989

METHOD AND APPARATUS FOR THE USE OF MULTIPLE-INPUT, MUTLIPLE OUTPUT (MIMO) SYSTEMS FOR MULTI-PACKET RECEPTION (MPR) IN A DISTRIBUTED TIME SLOT ASSIGNMENT PROTOCOL - A method of multiple packet reception (MPR) using distributed time slot assignment (TDSA) in a multi-user network where receivers can detect two packets at the same time includes the steps of requesting information on slot assignment in a contention area, setting a frame length and acquiring a the slot assignment, selecting the assigned slot, and announcing and confirming information about the frame length and the assigned slot. The step of requesting information on slot assignment, setting a frame length and acquiring a slot assignment, and selecting the assigned slot are performed in a network where receivers can detect two packets at the same time, where time slots are assigned to nodes instead of links, where one-hop neighbors are assigned to different time slots since they may form a link together, while sharing one time slot with one of the two-hop neighbors in a non-interfering assignment.

02-02-2012

20120294152

Hybrid Cross-Layer Routing Protocol for MANETs - A Hybrid Cross-Layer Routing (HCLR) protocol designed and implemented based on the premise of being able to leverage a pair of proactive and reactive routing schemes in Mobile Ad Hoc Networks (MANETs) which is used to compensate against wireless link effects thereby allowing for making more intelligent routing decisions. Compared to standalone proactive or reactive routing protocols, HCLR provides a two-tier improvement logic by performing local on-demand search in an n-hop neighborhood utilizing a 2-tuple cross-layer routing metric. HCLR is implemented in a Linux Quagga suite and its performance improvements compared to OSPF MANET Designated Routing (MDR) through emulation studies is demonstrated.

11-22-2012

Homayoun Zariv, Danville, CA US

Patent application number

Description

Published

20150095763

BROWSER EMULATOR SYSTEM - A browser emulator is provided. An example browser emulator system includes a communications module to receive requests for web pages from a browser application, a document object model (DOM) interceptor to intercept an initial document object model (DOM) provided by the web application, an activator to activate a browser emulator, and a DOM manipulator to generate a modified DOM. A marked-up document that corresponds to the modified DOM includes an event interceptor that replaces JavaScript code associated with the original DOM provided by the web application.